iTunes won't let me log in
So i know my email and password but when i try to log into iTunes on my MacBook it says its NOT correct. Ive changed it atleast twice and i don't know why it keeps saying that my password is incorrect but i know for a fact its not. I even tried to restart my computer but it won't shut down because of iTunes for some reason. I don't know what to do and its insanely frustrating.
MacBook Air